When she reached her house: she was surprised to see the butterfly sitting by her window.

Punctuations help end, pause, and emphasize certain sentence parts.

Commas separate phrases and clauses, a period ends a sentence, and a semicolon is used to join two logically connected independent clauses together, the dash is used to provide additional information that complements the main purpose of the sentence.

When she reached her house: she was surprised to see the butterfly sitting by her window.

The sentence is incorrect because of the wrong punctuation. Colon in the sentence is incorrectly used. Colons are typically used to introduce a list, explanation, or a quote. In this case, colon is inappropriate.

No change

When she reached her house she was surprised to see the butterfly sitting by her window.

The sentence lacks a punctuation mark after "house" to separate the independent clauses properly. Punctuations are necessary to indicate the relationship between the clauses and improve the sentence’s grammatical structure.

house she

When she reached her house ,she was surprised to see the butterfly sitting by her window.

The sentence is correct in terms of grammar because it employs proper punctuation. The comma after "house" indicates a pause between clauses, separating the main clause ("When she reached her house") from the dependent clause ("she was surprised to see the butterfly sitting by her window"). This enhances clarity and readability.

house, she

When she reached her house - she was surprised to see the butterfly sitting by her window.

The sentence is incorrect because of the wrong punctuation usage. It requires correct punctuation after "house". Punctuation is needed to separate the two independent clauses.

house - she

Correct sentence

When she reached her house, she was surprised to see the butterfly sitting by her window.

Option

C

Can you summarize what you’ve understood in the above steps?